Table 1

Study population and its’ characteristics in total and by gender

TotalMaleFemaleSig.
n%n%n%
Patients45010030567.714532.2
Masks1 8431001 23967.260432.8
Nights used656 324100456 82469.6199 50030.4
Age (years)
 Mean5958.460.2<0.01
 Range, SD19.5–86.3; 10.519.5–86.3; 10.722.2–83.5; 9.9
Mask type
 Nasal mask1 18864.576261.542670.5<0.01
 Nasal pillows mask40021.728923.311118.4<0.01
 Oronasal mask2211216713.5548.9<0.01
 Missing341.8211.7132.2
CPAP usage
Total (hours)
 Mean2303237421550.01
 Range; SD1–12 436; 1700.01–11 612; 17355–12436; 1619
Daily (min)
 Mean413.2410.7418.30.11
 Range; SD84.7–815.6; 95.884.7–815.6; 95.7127.3–668.6; 95.9
Nights in use (%)
 Mean70.971.270.50.8
 Range; SD0.3–100; 25.90.3–100; 25.70.2–100; 26.5
Unintentional leak (L/min)
 Mean5.76.24.80.01
 Range; SD0–83.0; 8.10–83.0; 8.70–72.0; 6.6
CPAP-AHI (events/h)
 Mean3.84.32.7<0.01
 Range; SD0–34.7; 3.60–31.1; 3.90.1–34.7; 2.6
  • AHI, Apnoea-Hypopnoea Index; CPAP, continuous positive airway pressure.